Apparatus for cracking oil



NOV. 24, 1931. (g,q EGLQFF APPARATUS FOR CRACKING OIL Original Filed Deo. 15, 1920 Patented Nov. -249 17931 UNITED STATES PATENT OFFICE GUSTAV EGLOFF, OF CHICAGO, ILLINOIS, ASSIGNOR TO UNIVERSAL OIL PRODUCTS COM- PANY, OF CHICAGO, ILLINOIS, CORPORATION F SOUTH DAKOTA APPARATUS FORl CRACKING OIL Original application illedleoember 15,

I application filed'by me-Serial No. 430,870

on December th, 1920; which has matured into Patent #1,703,617.

This inventionrelates to improvements in apparatus for cracking oil, and refers more .i

particularly to meansy for utilizing and con trollin the incondensable as formed as an inevita le result of the crac 'ng process, and more particularly to the utilization of the* incondensable gas formed bythe process itself, by passing it back through the heating tubes. In the present invention, the gas from each receiver goes to a common gas header, and is prevented fromv flowing back to the receiver, but instead is conveyed to a suitable reservoir where it is compressed and returned to the heatinI tubes.

In the drawing, the slngle ligure designates a view, partly in side elevation and partly in vertical section, of a battery of stills, constructed in accordance with the present invention. 1

Referring to the drawin 1 designates the various furnaces, in each o which is mounted a heatin -coil 2, as for example, a continuous 'A coil of our-inch pipe several hundred feet in length. Each coil 2 is connected bytrans- 1920, Serial No. 430,870. Divided and this application illed January 4, 1929. Serial No. 330.182.

which receiver has liquid drawof pipe 19, controlled by throttle valve 20 and pressure gauge 21 and liquidlevel gauge 22. Each rece1ver is also provided at its upper end w with a gas outlet pipe 23, having throttle valve 24, which pipes 23 lead to a common gas header 25. In each pipe 23 is interposed valve. The header 25 is connected to a compresser pump 27, which ut is prevented at all.

Shown is -only for the purpose of illustration.

This 'receiver 29 is connected by a feed line 30, having main throttle valve 31. The feed .line 30 in turn is connected by branch lines 32 having throttle valves 33 to the inlet side of the heating' coils 2. The process may be o erated as follows:

vvOil, as for example, Iansas fuel oil, may

fer line 3, having throttle valve 4, to its ex- ,be continuously fed through the various ply. Each vapor chamber 5Nis provided with a lresidue drawoif pipe 7, controlled by throt.-

' tle valve 8,and is also provided with a vapor outlet pipe 9, extending into the upper end of a dephlegmator 10, and provided ,with a spaced cap member 11, the arrangement being such as to permit the vapors to enter the dephlegmator 10, While preventing the reflux L condensate from falling back into the expansion chamber. Instead, the reflux condensate is drawn off through the line 12, having throttle valve 13, and leading back to thecorrespondin feed pump. Each dephlegmator is provid with suitable bailles 14', and at its upper end with a vapor outlet pipe 15, leading to condenser coil 16, seated in condenser' y box 17. The lower end of each coil 16 is connected to each corresponding receiver 18,

stills, and `there subjected to a pressure o fsb say 135 pounds and a temperature of 7 50 de'- f ees F. While still in liquid phase the oil 1s delivered to the expansion chambers 5, where vaporization takes place.

tors, where they are subjected to reflux condensation, and the reflux condensate returns to the heating tube for further treatment.

The gen,-u erated vapors pass through the dephlegma structed exactiy alike and maintains its own pressure over its own generated vapors and is not subjected to any back pressure from the gas header on the receivers. In other words, 5 the incondensable as is prevented from flowing backwardly t rough the system at all times.

I claim as my invention: i l. In an apparatus for cracking oil, the combination with a battery of stills, each having its own condenser and receiver, of a common incon'densable gaa header connected to leach receiver, a gas reservoir connected with said header, means for compressing the inconvdensable .gas in the reservoir, 'a return header connected with said gasreservoir, and valved branches leading from said return header for ,diverting-f the returned gas to any still of lthe battery, means located inthe lines connecting each receiver with the common gas header for preventing the return of incondensable gas from the .common gas header into the receiver of any still of the battery.

2. In an apparatus for cracking oil, the combination with a battery of stills, each a having its own condenser and receiver, of al common incondensable gas header connected to each receiver, a. gas reservoir connected with said header, means for compressing the 30 incondensable gask in the reservoir, a return header connected with said gas reservoir, and valved branches leading from said return header fordiverting the returned gas to any still of the battery, means comprising a check valve opening outwardly located in the lines connecting each receiver with they common gas header for preventing the return of incondensable gas from the common gas header into the receiver of any still of the battery. 4 In testimony whereof I aiiix my signature. GSTAV EGLOFF. 

